Spa



FIG. 1 is a left front perspective view of the spa of the invention;

FIG. 2 is a front perspective view of the spa illustrated in FIG. 1;

FIG. 3 is a right end perspective view of the spa illustrated in FIG. 1;

FIG. 4 is a left end perspective view of the spa illustrated in FIG. 1;

FIG. 5 is a front and rear elevation view of the spa illustrated in FIG. 1;

FIG. 6 is a left end elevation view of the spa illustrated in FIG. 1; and,

FIG. 7 is a right end elevation view of the spa illustrated in FIG. 1.

The broken lines are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a spa, as shown and described. 